Automatic crucible loading machine

The vibration platform and dust removal equipment of the automatic crucible loading machine solve the problems of low graphite powder filling efficiency and dust pollution, and realize an efficient and safe graphite powder filling process.

CN223409001UActive Publication Date: 2025-10-03HENAN HAOSHISIER ELECTRONIC EQUIPMENT CO LTD
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Patent Information

Application Number
CN202422553543.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-22
Publication Date
2025-10-03
Estimated Expiration
2034-10-22

AI Technical Summary

Technical Problem

In the prior art, the efficiency of filling graphite powder into a crucible is low, the labor intensity of workers is high, dust pollution is serious, and the filling density is not high, which affects the health of workers.

Method used

An automatic crucible loading machine is designed, which includes a vibration platform, a multi-station lifting silo, and dust removal equipment to realize automatic loading and dust removal. The vibration platform is used to compact the powder, the multi-station lifting silo is used to load multiple crucibles at one time, and the dust removal equipment reduces dust pollution.

Benefits of technology

It improves the loading efficiency, reduces the labor intensity of workers, reduces dust pollution, ensures the safety of the factory environment, and achieves compact and full filling of powder.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic crucible loading machine which is characterized by comprising a bin body, a tray, a vibration platform, a multi-station lifting bin, a linear driving device and dust removal equipment. By means of the multi-station lifting stock bin, discharging can be automatically conducted on the interiors of the multiple crucibles at a time, the crucible loading efficiency is high, the automation degree is high, and the labor amount of workers is reduced; in the process of charging the crucible, the vibration platform enables the crucible to vibrate continuously, the effect of compacting powder filled in the crucible can be achieved, the transformation of granular and powdery materials from bulk to block and shape is achieved, the materials are fully compacted and fully filled in a casting mold, bubbles and gaps in the materials are eliminated, the materials are formed and compacted, and the expected effect is achieved. In the loading process, the dust removal equipment can remove dust in the bin body, the feeding position of the crucible and the feeding pipe, dust pollution is avoided, and the factory environment is safer and healthier.
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Description

Technical Field

[0001] The utility model relates to the technical field of crucible charging equipment, in particular to an automatic crucible loading machine. Background Art

[0002] During the production of graphitized anode materials, one step requires filling a crucible with graphite powder before proceeding to subsequent steps. Currently, most factories use a crane or electric hoist to lift bags of graphite powder, then workers manually pour the powder into the crucible by pinching the bag's opening. Some factories even use a steel lifter to lift the bag and add the powder.

[0003] However, the above method of charging the crucible has the following characteristics: low efficiency, heavy labor for workers, large amount of dust generated during the process, which easily causes dust pollution and affects the health of workers, and low filling density. Utility Model Content

[0004] The present application provides an automatic crucible loading machine, which can solve the problems of low manual loading efficiency and heavy labor of workers, the large amount of dust generated during the process, which easily causes dust pollution and affects the health of workers, and the problem of low filling density.

[0005] In the present application, an automatic crucible loading machine is provided, which is characterized in that it includes: a warehouse body, a front side of the warehouse body is provided with an openable and closable door body; a tray for placing multiple crucibles; a vibration platform for placing the tray, so that the crucible on the tray is continuously vibrated during the filling process, so as to achieve the effect of compacting the powder filled in the crucible; a multi-station lifting warehouse, the multi-station lifting warehouse includes a lower warehouse, the lower warehouse is vertically slidably arranged in the warehouse body, and is located above the vibration platform, the upper end of the lower warehouse is upwardly provided with a feeding pipe extending to the top of the warehouse body, connecting the lower warehouse with the outside of the warehouse body, and the lower end of the lower warehouse is downwardly connected and provided with multiple lower Feed pipe, when multiple crucibles are placed on the vibration platform through the tray, each of the feed pipes corresponds to the position of one crucible, and a mounting plate is provided at the lower end of the feed pipe, and the mounting plate is in a horizontal state. A sponge pad is provided at the lower end of the mounting plate, and a plurality of through grooves are provided on the sponge pad and the mounting plate corresponding to the position of the feed pipe. As the multi-station lifting silo descends, the sponge pad can contact and press the upper end of the crucible; each of the feed pipes is configured to be openable and closable; a linear drive device is used to drive the multi-station lifting silo to slide up and down; a dust removal device is used to remove dust from the silo body, the crucible feed point and the feeding pipe.

[0006] In one embodiment, the vibration platform includes a placement plate, a plurality of vertical springs are provided at the lower end of the placement plate and connected to the warehouse body, a vibration motor is also provided at the lower end of the placement plate, and guardrails are provided on the left and right sides and the rear side of the vibration platform to provide a limit for the crucible after the crucible is installed.

[0007] In one embodiment, a shock-absorbing rubber pad is provided on the placement plate.

[0008] In one embodiment, a spiral breaking device is provided in the lower hopper and is located at the lower side of the lower hopper. The spiral breaking device includes a mounting shaft, which is rotatably provided in the lower hopper, with its rotating shaft along the horizontal direction, and is provided with a driving motor for driving its rotation. Four rows of breaking blocks are provided in a circular array on the mounting shaft, and each row of the breaking blocks is arranged in an equidistant straight line along the axial direction of the mounting shaft. As the mounting shaft rotates, the powder in the lower hopper is broken up.

[0009] In one embodiment, each of the discharge pipes is provided with a pneumatic butterfly valve for controlling the opening and closing of the discharge pipe.

[0010] In one embodiment, the linear drive device includes a hydraulic cylinder, which is arranged vertically, with a cylinder body fixedly mounted on the bin body and a telescopic rod fixedly connected to the lower bin.

[0011] In one embodiment, the dust removal equipment includes two bag-type dust collectors, one of which is connected to the silo body for extracting air from the silo body for dust removal, and the other is connected to the feeding pipe and the unloading point through a hose for dust removal at these two places.

[0012] In one embodiment, a vent pipe is provided on the upper end of the placement plate, and the vent pipe is connected to the hose. A plurality of connecting pipes are provided on the vent pipe, and the other end of each connecting pipe passes through the placement plate and the sponge pad and is connected to a crucible. When the sponge pad is pressed on the upper end of the crucible, each crucible can be dusted at its inner upper end through the connecting pipe.

[0013] In one embodiment, a plurality of stainless steel filter elements are provided on the upper end of the placement plate, each of which passes downward through the placement plate and the sponge pad and is connected to the location of one of the crucibles, and is used to filter the air when the sponge pad is pressed against the upper end of the crucible to discharge the material.

[0014] In one embodiment, eight feeding tubes are provided at the lower end of the feeding bin for simultaneously charging the eight crucibles. The feeding tubes are divided into two rows, with four tubes arranged in each row.

[0015] In summary, the present invention provides an automatic crucible loading machine, which has the following beneficial effects compared to the prior art:

[0016] (1) The multi-station lifting silo can automatically unload materials into multiple crucibles at one time, which has a high efficiency and a high degree of automation in loading crucibles, saving workers' labor;

[0017] (2) During the process of loading the crucible, the vibrating platform causes the crucible to vibrate continuously, which can achieve the effect of compacting the powder filled in the crucible, thereby realizing the transformation of granular and powdery materials from bulk to block and shaped, making the materials fully compact and filling the mold, eliminating bubbles and gaps inside, and making the materials shaped and compacted to achieve the expected effect;

[0018] (3) During the loading process, the dust removal equipment can remove dust from the warehouse, the crucible feed point and the feeding pipe to avoid dust pollution and make the factory environment safer and healthier. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0020] Figure 1 It is a three-dimensional diagram of an automatic crucible loading machine;

[0021] Figure 2 for Figure 1 Magnified view of area A in the middle;

[0022] Figure 3 This is a schematic diagram of the back structure of an automatic crucible loading machine;

[0023] Figure 4 This is a schematic diagram of the bottom structure of an automatic crucible loading machine;

[0024] Figure 5 for Figure 4 Magnified view of area B in the middle;

[0025] Figure 6 It is a side view of an automatic crucible loading machine;

[0026] Figure 7 for Figure 6 Schematic diagram of the cross section of the CC along the middle edge (diagram of the internal structure);

[0027] Figure 8 for Figure 7 Magnified view of area D in the middle;

[0028] Figure 9 for Figure 8An enlarged view of the middle E area (a schematic diagram showing only one stainless steel filter element installed, with the other stainless steel filter elements not installed in the diagram);

[0029] Figure 10 It is a front view of an automatic crucible loading machine;

[0030] Figure 11 for Figure 10 Schematic diagram of the cross section of the middle edge FF (diagram of the internal structure);

[0031] Figure 12 for Figure 11 Magnified view of the middle G region;

[0032] Figure 13 for Figure 12 Magnified view of the middle H region.

[0033] In the figure, 1. warehouse body; 2. stairs; 3. electric rolling door; 4. automated electronic control unit; 5. tray; 6. crucible; 7. placement plate; 8. shock-absorbing rubber pad; 9. spring; 10. vibration motor; 11. guardrail; 12. discharge bin; 13. feeding pipe; 14. dust removal port; 15. discharge pipe; 16. pneumatic butterfly valve; 17. mounting plate; 18. through groove; 19. sponge pad; 20. mounting shaft; 21. breaking block; 22. drive motor; 23. hydraulic cylinder; 24. first dust collector; 25. second dust collector; 27. vent pipe; 28. connecting pipe; 29. ​​stainless steel filter element. DETAILED DESCRIPTION

[0034] The following is a further description of the specific implementation methods of the present invention in conjunction with the accompanying drawings. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. The described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the usual meanings understood by those skilled in the art. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] See also Figures 1 to 13 An automatic crucible loading machine is characterized by comprising: a bin body 1, a tray 5, a vibration platform, a multi-station lifting bin, a linear drive device, and a dust removal device.

[0037] See also Figure 1 The warehouse body 1 is mainly composed of peripheral sheet metal parts and a metal frame, and forms a rectangular small house shape.

[0038] See also Figure 1 The front side of the chamber 1 is provided with an openable door, which is opened when the crucible 6 is removed and closed during loading. This allows the chamber 1 to remain relatively closed during loading to prevent dust from spreading. In one embodiment, the door is an electric rolling door 3, which is relatively quick and convenient. The specific structure of the electric rolling door 3 is prior art and will not be described in detail here.

[0039] See also Figures 1 to 5, the tray 5 is used to place multiple crucibles 6. The vibration platform is used to place the tray 5, so that the crucible 6 on the tray 5 is continuously vibrated during the filling process, so as to achieve the effect of compacting the powder filled in the crucible 6. In one embodiment, the vibration platform includes a placement plate 7, and the lower end of the placement plate 7 is provided with eight (four in the front and four in the back) vertical (the central axis is vertical) springs 9 connected to the warehouse body 1, and both ends of the spring 9 are connected between the placement plate 7 and the warehouse body 1 by welding. Two vibration motors 10 are fixedly installed at the lower end of the placement plate 7 by threaded connection or other conventional methods. The excitation force of the vibration motor 10 can be changed by adjusting the frequency converter to achieve an ideal state of the material in the crucible 6. Guardrails 11 are provided on the left and right sides and the rear side of the vibration platform to provide a limit for the crucible 6 after the crucible 6 is installed. With this arrangement, during the process of loading crucible 6, the vibrating platform continuously vibrates the crucible 6, effectively compacting the powdered material within it. This allows for the transformation of granular and powdered materials from bulk to bulk and shaped forms, fully compacting the material and filling the mold, eliminating any bubbles or gaps within, and shaping and compacting the material to achieve the desired effect. Furthermore, a 10mm thick, shock-absorbing rubber pad 8 is adhered to the placement plate 7. This arrangement allows the plate 7 to contact the tray 5 through the shock-absorbing rubber pad 8, ensuring a more stable position when the tray 5 is placed.

[0040] See also Figure 3 、 Figures 6 to 8 The multi-station lifting silo includes a lower silo 12, which is used to accommodate the powder to be loaded into the crucible 6. The lower silo 12 is made of 8k mirror stainless steel plate with a smooth surface and stable structure. The lower silo 12 is vertically slidably arranged in the silo body 1 and is located above the vibration platform. A feeding pipe 13 extending to the top of the silo body 1 is fixed upward at the upper end of the lower silo 12, connecting the lower silo 12 with the outside of the silo body 1, for feeding materials into the lower silo 12. A staircase 2 is provided at the rear end of the silo body 1 leading to its upper end (second floor). The ton bag filled with powder is lifted to the feeding pipe 13 by an electric hoist or a crane. Then the workers can go up to the second floor of the silo body 1 through the staircase 2, open the ton bag and let the powder fall into the lower silo 12.

[0041] See also Figure 8 、 Figure 9The lower end of the discharge bin 12 is downwardly connected and is provided with a plurality of discharge pipes 15. When the plurality of crucibles 6 are placed on the vibration platform through the tray 5, each of the discharge pipes 15 corresponds to the position of one crucible 6 and is used to discharge material into the corresponding crucible 6. A mounting plate 17 is fixed to the lower end of the discharge pipe 15 by welding, and the mounting plate 17 is in a horizontal state. A sponge pad 19 is adhered to the lower end of the mounting plate 17, and the sponge pad 19 is made of high-density sponge. The sponge pad 19 and the mounting plate 17 are both provided with a plurality of through grooves 18 corresponding to the positions of the discharge pipes 15, which are used to allow the powder in the discharge bin 12 to fall into the plurality of crucibles 6 respectively from the plurality of discharge pipes 15. As the multi-station lifting bin descends, the sponge pad 19 can contact and press the upper end of the crucible 6 to prevent dust from overflowing when loading the crucible 6. With this arrangement, the multi-station lifting hopper can automatically unload materials into a plurality of crucibles 6 at one time, and the efficiency and degree of automation of loading the crucibles 6 are high, which saves workers' labor. In addition, the device is applicable to, but not limited to, filling graphite powder as a negative electrode material.

[0042] See also Figure 8 、 Figure 9 In one embodiment, preferably, eight discharge pipes 15 are provided at the lower end of the discharge bin 12 for simultaneously charging the eight crucibles 6. These discharge pipes 15 are divided into two rows, with four arranged in each row, so that the charging of the eight crucibles 6 can be completed at one time. This arrangement has a reasonable structure and good effect.

[0043] See also Figure 8 、 Figure 9 Each of the discharge pipes 15 is configured to be openable and closable. When feeding into the discharge bin 12, the discharge pipe 15 is closed. When feeding is complete and the material is to be discharged into the crucible 6, the discharge pipe 15 is opened. In one embodiment, each of the discharge pipes 15 is provided with a pneumatic butterfly valve 16 for controlling the opening and closing of the discharge pipe 15. This configuration provides a reasonable structure and stable performance.

[0044] See also Figures 10 to 13In one embodiment, the discharge bin 12 is equipped with a spiral disintegrating device located on the underside of the bin 12. Two spiral disintegrating devices are required to discharge the two rows (eight) of crucibles 6, each disintegrating the powder at one row of the discharge tubes 15. Each spiral disintegrating device includes a mounting shaft 20 rotatably mounted in the discharge bin 12, with its axis of rotation extending horizontally. Two drive motors 22 are fixedly mounted on the outer wall of the discharge bin 12, with their output shafts fixedly connected to the two mounting shafts 20 for rotation. Four rows of disintegrating blocks 21 are fixedly arranged in a circular array on the mounting shafts 20. Each row of disintegrating blocks 21 is arranged equidistantly along the axis of the mounting shaft 20. Two mounting shafts 20 are each used to disintegrate the powder at two rows of the discharge tubes 15. This arrangement ensures that the powder in the discharge bin 12 is dispersed before being discharged into the crucibles 6, resulting in a more efficient filling process.

[0045] See also Figure 12 The linear drive device is used to drive the multi-station lifting silo to slide up and down. In one embodiment, the linear drive device includes four hydraulic cylinders 23, each of which is arranged vertically. When viewed from above, the cylinder bodies of the hydraulic cylinders 23 are fixedly installed in the four corners of the silo body 1, and the telescopic rods are fixedly connected to the four corners of the lower silo 12. This arrangement can withstand a large load, has a stable transmission effect, and a stable structure.

[0046] See also Figure 1 、 Figure 8 、 Figure 11 , the dust removal equipment is used to remove dust from the warehouse body 1, the crucible 6 feed point and the feeding pipe 13. In one embodiment, the dust removal equipment includes two bag-type dust collectors (the bag-type dust collector is a prior art, and its specific principle and structure will not be introduced in detail here), which are divided into a first dust collector 24 and a second dust collector 25, wherein the first dust collector 24 is connected to the warehouse body 1, and is used to extract the air in the warehouse body 1 for dust removal. The second dust collector 25 is connected to the feeding pipe 13 and the unloading point through a hose, respectively, for dust removal at these two places. This arrangement is reasonable in structure and has good effect, so that dust is removed from the places most prone to dust pollution. Furthermore, a through dust removal port 14 is provided on each side of the left and right sides of the feeding pipe 13, which is used to connect the two hoses to provide a dust removal position.

[0047] See also Figure 13In one embodiment, a vent pipe 27 is provided at the upper end of the placement plate 7, one end of the vent pipe 27 is connected to the hose, and the other end is closed. A plurality of connecting pipes 28 are provided on the vent pipe 27, and the other end of each connecting pipe 28 passes through the placement plate 7 and the sponge pad 19 and is connected to the location of one of the crucibles 6. When the sponge pad 19 is pressed on the upper end of the crucible 6, each of the crucibles 6 can be dusted at its upper end through the connecting pipe 28. In this way, dust is removed at the unloading position of the crucible 6, the structure is reasonable and the effect is good.

[0048] See also Figure 9 In one embodiment, a plurality of stainless steel filter elements 29 are fixedly provided at the upper end of the placement plate 7, each of which passes downward through the placement plate 7 and the sponge pad 19 and is connected to the location of one of the crucibles 6, and is used to filter the air when the sponge pad 19 is pressed against the upper end of the crucible 6 to discharge the material, and cooperates with the second dust collector 25 to remove dust at the discharge point of the crucible 6, which has a better effect.

[0049] See also Figure 1 An automated electric control unit 4 is also provided next to the warehouse body 1 for controlling and operating various electrical components or driving parts. Its specific structure and principle are prior art and will not be introduced in detail here.

[0050] The following is a brief description of the working steps of this application:

[0051] S1. Start the dust removal equipment, and then use an electric hoist or crane to put the powder into the lower hopper 12, while the spiral breaking device breaks up the powder;

[0052] S2. Open the electric shutter door 3, use a forklift to place the tray 5 and the crucible 6 on the vibration platform, and then close the electric shutter door 3;

[0053] S3. When the powder in the lower hopper 12 accumulates to a certain level, the linear drive device controls the multi-station lifting hopper to descend. When the sponge pad 19 contacts and presses the upper end of the crucible 6, the start butterfly valve is controlled to open and the material is loaded into each crucible 6. At the same time, the vibration platform starts vibrating.

[0054] S4. After a specified time, the pneumatic butterfly valve 16 is closed, loading stops, the vibration platform also stops, the multi-station lifting silo rises, and loading is completed;

[0055] S5. The electric rolling door 3 is opened, the loaded crucible 6 is removed, and the crucible 6 to be loaded is replaced, and the loading is ready to continue.

Claims

1. An automatic crucible loading machine, characterized in that: include: A warehouse body (1), wherein a door that can be opened and closed is provided on the front side of the warehouse body (1); A tray (5) for placing a plurality of crucibles (6); a vibration platform for placing the tray (5) so that the crucible (6) on the tray (5) is continuously vibrated during the filling process, thereby achieving the effect of compacting the powder filled in the crucible (6); A multi-station lifting silo, the multi-station lifting silo comprising a lower silo (12), the lower silo (12) being arranged in the silo body (1) along a vertical sliding manner and being located above the vibration platform, the upper end of the lower silo (12) being upwardly provided with a feeding pipe (13) extending to the top of the silo body (1), connecting the lower silo (12) with the outside of the silo body (1), the lower end of the lower silo (12) being downwardly connected with a plurality of lower silo pipes (15), when a plurality of crucibles (6) are placed on the vibration platform through the tray (5), each lower silo The material tubes (15) each correspond to the position of the crucible (6), and a mounting plate (17) is provided at the lower end of the discharge tube (15). The mounting plate (17) is in a horizontal state, and a sponge pad (19) is provided at the lower end of the mounting plate (17). The sponge pad (19) and the mounting plate (17) are both provided with a plurality of through grooves (18) corresponding to the position of the discharge tube (15). As the multi-station lifting silo descends, the sponge pad (19) can contact and press on the upper end of the crucible (6); each of the discharge tubes (15) is configured to be openable and closable; A linear drive device, used to drive the multi-station lifting silo to slide up and down; The dust removal equipment is used to remove dust from the warehouse (1), the feeding point of the crucible (6) and the feeding pipe (13).

2. The automatic crucible loading machine according to claim 1, characterized in that: The vibration platform comprises a placement plate (7), a plurality of vertical springs (9) are provided at the lower end of the placement plate (7) and are connected to the warehouse body (1), a vibration motor (10) is also provided at the lower end of the placement plate (7), and guardrails (11) are provided on the left and right sides and the rear side of the vibration platform for providing a limit for the crucible (6) after the crucible (6) is installed.

3. The automatic crucible loading machine according to claim 2, characterized in that: A shock-absorbing rubber pad (8) is provided on the placement plate (7).

4. The automatic crucible loading machine according to claim 1, characterized in that: A spiral dispersing device is provided in the lower bin (12) and is located at the lower side of the lower bin (12). The spiral dispersing device includes a mounting shaft (20). The mounting shaft (20) is rotatably provided in the lower bin (12), and its rotating shaft is in the horizontal direction. A driving motor (22) is provided for driving its rotation. Four rows of dispersing blocks (21) are provided in a circular array on the mounting shaft (20). Each row of dispersing blocks (21) is arranged in an equidistant straight line along the axial direction of the mounting shaft (20). As the mounting shaft (20) rotates, the powder in the lower bin (12) is dispersed.

5. The automatic crucible loading machine according to claim 1, characterized in that: Each of the discharge pipes (15) is provided with a pneumatic butterfly valve (16) for controlling the opening and closing of the discharge pipe (15).

6. The automatic crucible loading machine according to claim 1, characterized in that: The linear drive device comprises a hydraulic cylinder (23), the hydraulic cylinder (23) is arranged vertically, the cylinder body thereof is fixedly mounted on the bin body (1), and the telescopic rod thereof is fixedly connected to the lower bin (12).

7. The automatic crucible loading machine according to claim 1, characterized in that: The dust removal equipment includes two bag-type dust collectors, one of which is connected to the silo (1) and is used to extract the air in the silo (1) for dust removal, and the other is connected to the feeding pipe (13) and the unloading point through a hose, respectively, for dust removal at these two points.

8. The automatic crucible loading machine according to claim 2, characterized in that: A vent pipe (27) is provided at the upper end of the placement plate (7), and the vent pipe (27) is connected to a hose. A plurality of connecting pipes (28) are provided on the vent pipe (27), and the other end of each connecting pipe (28) passes through the placement plate (7) and the sponge pad (19) and is connected to the location of one of the crucibles (6). When the sponge pad (19) is pressed on the upper end of the crucible (6), each of the crucibles (6) can be dusted at its inner upper end through the connecting pipe (28).

9. The automatic crucible loading machine according to claim 8, characterized in that: A plurality of stainless steel filter elements (29) are provided at the upper end of the placement plate (7), each of which passes downward through the placement plate (7) and the sponge pad (19) and is connected to the location of one of the crucibles (6), and is used to filter air when the sponge pad (19) is pressed against the upper end of the crucible (6) to discharge material.

10. The automatic crucible loading machine according to claim 1, characterized in that: Eight discharge pipes (15) are provided at the lower end of the discharge bin (12) for simultaneously charging the eight crucibles (6). The discharge pipes (15) are divided into two rows, with four in each row.